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They cause high environmental risks that are manifested in their impacts on land, subsoil, and soil resources, as well as air, underground and surface waters, vegetation, and animals.
The analysis of professional diseases receives minimum attention, and many employees expose themselves to risks because they do not know about the consequences of inhaling stone dust during their work.

Design, Construction and Instrumentation of the PCCV Model The PCCV model is a uniform, 1:4-scale model of the containment structure of Unit 3 of the Ohi pressurized-water reactor Nuclear Power Station in Japan.
NUREG/CR-6809, SAND2003-0839P, Albuquerque, NM: Sandia National Laboratories. 2002 [6] Prinja, N.K. and Shepherd, D., Numerical Simulation of Limit Load Testing of ¼ Scale Prestressed Concrete Containment Vessel, Pressure Equipment Technology - Theory and Practice, Professional Engineering Publishing Limited, May 2003

Some designers are not familiar with the design codes of steel construction, and lack of professional training of steel structure; some products are designed by manufacturers and design institute signatures.
Otherwise, because of long-term exposure to outdoor for steel sheet material and other components, the atmospheric and water stability is poor, premature corrosion and lower strength may occur, and the maintenance period will be shorten, leaking phenomenon will also occur. Ⅵ Conclusion (1) On the basis of the characteristics of granary railway canopy, although there is no design codes for arched roof structure, combined with the more complex factors, the design has regulations to follow in accordance with the relevant codes.

Hot work tool steel, with good ductility, good thermal conductivity, crack resistant in high temperatures, resistant to cooling down with water, high hardenability and resistance to tempering during work, good steel polishability.
Acknowledgement Article has been done in connection with project Increasing of Professional Skills by Practical Acquirements and Knowledge, reg.

Description Sample A1 A2 A3 B1 B2 B3 Weight of empty container, W1 (g) 191.42 189.77 190.98 154.31 151.12 158.09 Weight of container + Weight of sample before drying, W2 (g) 240.11 240.25 241.35 204.21 201.75 208.53 Weight of container + Weight of sample after drying, W3 (g) 240.07 240.20 241.28 204.17 201.70 208.49 Water content (%) 0.08 0.10 0.14 0.08 0.10 0.08 Average (%) 0.11 0.09 Both samples showed relatively very low moisture content.
Geological Survey Professional Paper 1802, p.

The most prominent feature of collapsible loess is the additional settlement is rapid and larger by water and self weight of soil or additional stress.
Geotechnical Centrifuge Technology [M].Blackie Academic & Professional(1995)

Except for the Cu-variation samples which were water-quenched, extruded profiles were air-cooled.
Barba, Alusurface 94: A seminar for Professional Up-dating in Surface Finishing of Aluminium, Interall Publications, Amsterdam, Holland, 1994

During the excavation of a HOPSCA project group foundation pits in Fujian province, a large pit was excavated by dewatering well group earlier,it caused the water table dropped seriourly in the surrounding blocks and the follow-up foundation pits were excavated with only little dewatering measures. the large range of dewatering in the group foundation pits resulted in the differential settlement of road and cracking of some buildings aroud the group foundation pits.
But the national Codes, local Codes and professional norms in China almost did not make any provisions for group excavation engineering.

It was the first stage for project management information system, and the future vision of system was mainly designed by the metaphor practice of agile system in order to individual modules and appearance became visible, meanwhile, developers and clients can be from different sides to understand the customer field and professional knowledge.
System development example Specific function module of the general model should be chosen according to the characteristics of the project when the agile development model based on bidirectional iteration will be applied and the case that the project management system development for the first phase of the South-to-North Water Diversion Project in Tianjin BinHai New Area, named Caozhuang pumping station project is illustrated in the paper.

This study will aim at stationary pollution sources such as coal-fired boiler in electricity and cogeneration profession, secondary aluminum refinery and cement kiln to construct its professional dioxin emission factors to provide future reference for processing control strategies formulation.
As fire coal is burned in furnace to release energy to heat water or other organic heat carrier such as heat transfer oil et al. to a certain degree or pressure, the boiler will function as a heat energy power device.